To get the 'Angler Extraordinaire' achievement you'd need to invest about 8 to 10h in the fishing mini game. This is my last save game right before the achievement popped, so load it up and go fishing once (just needs about 20 more fish) to get this.

Caution: This save game is rather far into the game and I'm not totally sure if just loading it up might trigger other achievements pops (for progress I've made in other parts) as well, so if you'd rather get all the others through regular means, I'd suggest doing this one last.

How to use:
Extract the file into your save game folder. For Steam that's C:\Users\YOURUSERNAMEHERE\AppData\Local\Shenmue3\Saved\SaveGames

Next, you have to rename the file. All the numbers before the last 2 in the name correspond to the user's personal steam id, so you need to change these numbers to your own (SlotYOURSTEAMID64.sav). If you have other save files in the folder, they will show your steam id in their names. These

There's still one thing left to do, as I also found this comment on the steam forums:

Originally posted by Zero:
I was messing around with this again and did eventually figure out how to load my saves in steam. On top of changing the file name, you need to actually hex edit the save as well to update the user ID inside. If you save your game in steam and then open up that save in a hex editor there's a user id code at the end of the file. Save that steam id somewhere and open up the epic game store save which you renamed, replace the user id at the end of that file with the one you got from the steam save and it should work. I will note that I needed to do this for every single one of my save files, I tried just doing the latest one and it bizarrely failed to load.

And a thread on Shenmue Dojo on the same topic: https://www.shenmuedojo.com/forum/index.php?threads/info-shenmue-iii-transferring-save-games-from-different-accounts.3333/

I had a look into the file with HxD and found a userid entry near the end, but admittedly I wasn't too sure which values were relevant there, so I can't really give a detailed explaination on how to work it out.
Hopefully all that is enough information for others to get it going!



If everything worked out as it should, you can then load it in game (it's the save with the Feb 6th 2023 date | 22/5/1987 in game time - see screenshot).